F-O-X
FOX
H-E-N
HEN
B-U-G
BUG
S-U-N
SUN
N-U-T
NUT
B-U-S
BUS
B-O-X
BOX
B-A-G
BAG
W-E-B
WEB
G-U-M
GUM
P-E-G
PEG
B-I-N
BIN
V-E-T
VET
L-I-P
LIP
D-O-G
DOG
C-U-P
CUP
H-UG
HUG
Z-I-P
ZIP
F-A-N
FAN
P-I-G
PIG
M-O-P
MOP
H-O-T
HOT
B-E-D
BED
C-A-T
CAT
C-A-N
CAN